[en] Results: of studying low-energy nuclear reactions at the HELIS facility (LPI) are presented. Investigations of yields from DD reactions in deuterated crystal structures at deuteron energies of 10 to 25 keV show a considerable enhancement effect. It is shown that exposure of the deuterated targets to the Н⁺ (proton) and Ne⁺ beams with energies from 10 to 25 keV and an X-ray beam with the energy of 20 to 30 keV stimulates DD reaction yields. For the CVD diamond target, it is shown that its orientation with respect to the deuteron beam affects the neutron yield. The D⁺ beam is shown to cause much higher heat release in the TiD_x target than the Н⁺ and Ne⁺ beams, and this heat release depends on the deuterium concentration in the target and the current density of the deuteron beam.

[en] The results of measurements of the DD-reaction yields from the Pd/PdO:D_x and the Ti/TiO_2:D_x heterostructures in the energy range of 10–25 keV are presented. The neutron and proton fluxes are measured using a neutron detector based on "3He-counters and a CR-39 plastic track detector. Comparisons with calculations show the significant effect of DD-reaction yield amplification. It was first shown that the impact of H"+(protons) and Ne"+ ion beams in the energy range of 10–25 keV at currents of 0.01–0.1 mA on the deuterated heterostructure results in appreciable DD-reaction yield enhancement. (paper)

[en] The software tools developed for the validation and verification of the standard electromagnetic physics package of Geant4 are described. The validation is being performed versus experimental data and in regression to a previous version of Geant4. Examples of validation results are presented.

[en] We have developed simulation codes to handle electromagnetic process in Geant4 in an attempt to improve the accuracy of dose calculations for ion radiotherapy. Geant4 is a Monte Carlo simulation toolkit for simulating the passage of particles through matter, and capable of handling all physics processes including electromagnetic, hadronic and nucleus-nucleus interactions which are indispensable to calculate three-dimensional dose distributions in ion therapy. In this work we report the recent progress for Geant4 models for ions and new validation results, which were obtained for depth-dose distributions of carbon ions incident on water against experimental measurements. We found simulations to reproduce the experimental data fairly well. (author)

[en] Results of the experimental research, performed within the framework of the OLIMPIYA project on investigation of the relict galactic cosmic ray nucleus tracks in olivine crystals from the Marjalahti and the Eagle Station meteorites, are presented. Up to now, there were processed 170 crystals, and about 6000 tracks with nuclear charge Z > 55 were registered. About 45 tracks are identified as nuclei with charge of 88 < Z < 92. Charges of three nuclei, associated with super long tracks, exceed Z = 92. In the first approximation the charge value of two of these nuclei lies in the range of 105 < Z < 130. The charge of one of them is estimated as Z = 119±6. We believe that confirm the hypothesis of the existence of 'stability islands' for natural trans-Fermi nuclei.

[en] Current status of the Standard electro-magnetic (EM) package of the Geant4 toolkit is described. We report on the stability of results with respect to variation of production threshold and Physics List. This illustrates the trade between CPU time and precision of simulation predictions. New comparisons of the Geant4 simulation with the experimental data are shown. The CPU benchmark results are discussed

[en] Measurements of the double-differential π^± production cross section in the range of momentum 100≤p≤800 MeV/c and angle 0.35≤θ≤2.15 rad using π^± beams incident on beryllium, aluminum, carbon, copper, tin, tantalum, and lead targets are presented. The data were taken with the large-acceptance hadron production (HARP) detector in the T9 beam line of the CERN Proton Synchrotron. The secondary pions were produced by beams in a momentum range from 3 to 12.9GeV/c hitting a solid target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using a small-radius cylindrical time projection chamber placed inside a solenoidal magnet. Incident particles were identified by an elaborate system of beam detectors. Results are obtained for the double-differential cross sections d²σ/dp dθ at six incident-beam momenta. Data at 3,5,8, and 12GeV/c are available for all targets, while additional data at 8.9 and 12.9GeV/c were taken in positive particle beams on Be and Al targets, respectively. The measurements are compared with several generators of GEANT4 and the MARS Monte Carlo simulation.

[en] Measurements of the double-differential π^± production cross section in the range of momentum 0.5≤p≤8.0 GeV/c and angle 0.025≤θ≤0.25 rad in collisions of protons on beryllium, carbon, nitrogen, oxygen, aluminum, copper, tin, tantalum, and lead are presented. The data were taken with the large-acceptance HAdRon Production (HARP) detector in the T9 beamline of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors. Thin targets of 5% of a nuclear interaction length were used. The tracking and identification of the produced particles were performed using the forward system of the HARP experiment. Results are obtained for the double-differential cross sections d²σ/dp dΩ mainly at four incident proton beam momenta (3, 5, 8, and 12 GeV/c). Measurements are compared with the GEANT4 and MARS Monte Carlo generators. A global parametrization is provided as an approximation of all the collected datasets, which can serve as a tool for quick yield estimates.

[en] The HARP Collaboration has presented measurements of the double-differential π^± production cross section in the range of momentum 100 MeV/c≤p≤800 MeV/c and angle 0.35 rad≤θ≤2.15 rad with proton beams hitting thin nuclear targets. In many applications the extrapolation to long targets is necessary. In this article the analysis of data taken with long (one interaction length) solid cylindrical targets made of carbon, tantalum, and lead is presented. The data were taken with the large-acceptance HARP detector in the T9 beam line of the CERN proton synchrotron. The secondary pions were produced by beams of protons with momenta of 5, 8, and 12GeV/c. The tracking and identification of the produced particles were performed using a small-radius cylindrical time projection chamber placed inside a solenoidal magnet. Incident protons were identified by an elaborate system of beam detectors. Results are obtained for the double-differential yields per target nucleon d²σ/dpdθ. The measurements are compared with predictions of the MARS and GEANT4 Monte Carlo simulations.

[en] Measurements of the double-differential proton production cross-section d²σ/dpdΩ in the range of momentum 0.5 GeV/c≤p<8.0 GeV/c and angle 0.05 rad≤θ<0.25 rad in collisions of charged pions and protons on beryllium, carbon, aluminium, copper, tin, tantalum, and lead are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors and impinged on a target of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using the forward spectrometer of the HARP experiment. Results are obtained for the double-differential cross-sections mainly at four incident beam momenta (3,5,8, and 12 GeV/c). Measurements are compared with predictions of the geant4 and mars Monte Carlo generators.